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(11)

EP 3 111 576 A1

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(43) Date of publication: 04.01.2017 Bulletin 2017/01 (21) Application number: 14708197.0 (22) Date of filing: 25.02.2014

(51) International Patent Classification (IPC):  H04J 11/00(2006.01) H04B 17/00(2015.01) (86) International application number: PCT/EP2014/000493 (87) International publication number: WO 2015/127942 (03.09.2015 Gazette 2015/35)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (71) Applicant: Telefonaktiebolaget LM Ericsson (publ) 164 83 Stockholm (SE)	(72) Inventor: XU, Bai Cheng 90443 Nuremberg (DE) (74) Representative: Ericsson  Patent Development Torshamnsgatan 21-23 164 80 Stockholm 164 80 Stockholm (SE)